Lets open chrome://net-internals/#dns
Hosts files are located at /private/etc/.
Edit and add our new host configuration/ip.
sudo nano /private/etc/hosts
sudo nano /etc/hosts
Flush DNS cache
sudo dscacheutil -flushcache
This way we can have www.domain.com on a server for regular users and set up our own www.domain.com pointing to another server while we set up, for example, the migration.